Removable Valve And Valve Seat Patents (Class 137/283)
  • Patent number: 9334973
    Abstract: A trim of a check valve includes a stem, a fixed member including two opposite through holes, a rotational member secured to the stem and including two opposite recesses, a hollow coupling member including an inlet at one end, a sleeve releasably secured to the coupling member wherein the sleeve includes an outlet at an other end and the fixed member and the rotational member are disposed at one end of the sleeve, a closing member moveably disposed at an other end of the sleeve, a connector releasably secured to an other end of the stem, and a biasing member biased between the closing member and the connector. In response to fluid pressure differential greater than a predetermined value the rotational member is clockwise turned to align the through holes with the recesses to allow the fluid to flow out of the outlet.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: May 10, 2016
    Assignee: FUSAN VALVE (SUZHOU) LIMITED
    Inventors: Lian-Tsai Jong, Wen-Lung Chung, Shen-Kai Chung, Ji-Hui Jia
  • Patent number: 9260841
    Abstract: A drain valve slide and drain valve facing seal an elbow drain hole in a dry barrel fire hydrant when the main valve is closed. A first wedge on the main valve assembly engages the elbow when the main valve is opened and biases the drain valve slide and drain valve facing toward the elbow drain hole, creating a positive seal.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: February 16, 2016
    Assignee: Kennedy Valve Company
    Inventor: Paul Kennedy
  • Patent number: 8683831
    Abstract: A locking cover plate can be selectively locked in position on a stortz pipe end fitting or can be unlocked and removed for access to the open pipe end. The cover plate includes a sliding plate that is driven laterally outward into a deployed state by rotating a drive bolt. The drive bolt is coupled to the sliding plate through a torque limiting coupling that transfers the rotation of the drive bolt to translating movement of the latch bar with a cam plate. Movement of the sliding plate is indicated through a front of the cover plate such that the user can identify whether the cover plate is locked on a fitting or simply placed on the fitting without the lock engaged.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: April 1, 2014
    Assignee: The Knox Company
    Inventor: Dohn J. Trempala
  • Patent number: 8302623
    Abstract: An cylindrical hollow anti-backflow insert that can rapidly retrofit a fire hydrant to prevent a forced liquid inflow into the fire hydrant after simple insertion of the insert into the outflow nozzles of a fire hydrant. A curved anti-backflow flap having a hinge at one end and an inflow fin at an opposite end is positioned within the insert. Outflow of water from the fire hydrant will cause the flap to rotate upwards, at which point the inflow fin protrudes into the interior of the insert sufficiently to catch any forced liquid inflow stream which will force the flap downward towards a curved flap seal. The curved flap seal reversibly engages the perimeter of the flap, thereby reversibly closing the rear end of the insert and preventing the forced inflow of liquid into the fire hydrant.
    Type: Grant
    Filed: January 25, 2011
    Date of Patent: November 6, 2012
    Inventor: H. Brunson Nichols
  • Patent number: 7975720
    Abstract: A ball valve cartridge is disclosed. It is especially well suited for freezeless hydrant applications and any other application where it is positioned remotely from a handle or other actuating element. The cartridge contains a ball valve element and an internal stem with a key for rotating the ball valve element between open and closed positions. The stem has rotational stop elements that limit rotational movement of the stem and the ball valve element. In a yard hydrant application, a drain valve can be added to regulate the opening and closing of the drain hole. It has an operational range of a quarter turn or ninety degrees.
    Type: Grant
    Filed: March 25, 2009
    Date of Patent: July 12, 2011
    Inventor: Scott T. Conway
  • Patent number: 6929022
    Abstract: A fire hydrant having a valve seat flange with an integral liner. In one embodiment, the fire hydrant includes a valve seat flange disposed between a standpipe and a hydrant shoe. The valve seat flange includes a standpipe neck defining internal threads to directly connect to the standpipe and a base flange to directly connect to the hydrant shoe. The liner includes an outer peripheral edge that is entrapped within the valve seat flange and an inner circumferential surface defining threads for receiving the valve seat of a valve assembly. The present invention also discloses a process of manufacturing a valve seat flange, including the steps of: (a) manufacturing the liner, (b) incorporating the liner into a core with the outer peripheral region of the liner exposed, (c) placing the integral core/liner into the valve seat flange mold and (d) forming the valve seat flange around the liner with the valve seat flange entrapping the outer peripheral region of the liner.
    Type: Grant
    Filed: June 30, 2004
    Date of Patent: August 16, 2005
    Assignee: East Jordan Iron Works, Inc.
    Inventors: Todd Ingalls, Kevin J. Wright, Bryan J. Griffin, Richard J. Brooks
  • Patent number: 5441074
    Abstract: A unitized, rubber coated valve body for a dry barrel fire hydrant. The valve body is formed to have a hollow, tapered, substantially spherical, cast iron member having a hollow center, a threaded, upwardly facing hole for attachment to a control shaft or stem, a downwardly facing projection, and a rubber coating. The unitized body eliminates labor of assembly during service and maintenance operations. The rubber coating both provides a resilient valve face for effective sealing, and protects metal parts of the valve from corrosion arising from contact with water. The tapered body both distributes force evenly to the rubber valve face in the manner of a prior art metal disc, and enables water to flow therearound with minimized resistance, thereby maintaining head pressure at acceptable levels. The novel valve body satisfies both objectives while minimizing weight and requiring minimal material for fabrication. The body is formed with integral ears for slidably obstructing drain holes.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: August 15, 1995
    Assignee: AVK-Holding
    Inventor: Niels A. Kjaer
  • Patent number: 5368064
    Abstract: A unitized, rubber coated valve body for a dry barrel fire hydrant. The valve body is formed to have a hollow, tapered, substantially spherical, cast iron member having a hollow center, a threaded, upwardly facing hole for attachment to a control shaft or stem, a downwardly facing projection, and a rubber coating. The unitized body eliminates labor of assembly during service and maintenance operations. The rubber coating both provides a resilient valve face for effective sealing, and protects metal parts of the valve from corrosion arising from contact with water. The tapered body both distributes force evenly to the rubber valve face in the manner of a prior art metal disc, and enables water to flow therearound with minimized resistance, thereby maintaining head pressure at acceptable levels. The novel valve body satisfies both objectives while minimizing weight and requiring minimal material for fabrication. The body is formed with integral ears for slidably obstructing drain holes.
    Type: Grant
    Filed: February 15, 1994
    Date of Patent: November 29, 1994
    Assignee: AVK-Holding
    Inventor: Niels A. Kjaer
  • Patent number: 4748997
    Abstract: An apparatus and method of removing and replacing the main water supply valve of a high pressure hydrant without the necessity of shutting off the supply of water to the hydrant, wherein the apparatus generally comprises a hydrant adapter for interconnection of the apparatus to a variety of hydrant configurations, a slide valve chamber and slide valve assembly, a main body, a valve seat wrench and interconnected elongate wrench shaft moveable through the interior of the apparatus, an upper seal assembly to form a water tight sliding seal around the wrench shaft, a valve lifting tool moveable through the interior of the elongate wrench shaft in water tight relation therewith, a wrench activating assembly, a plurality of bleed valves for removal of water from selected portions of the apparatus, and a bypass valve assembly for equalization of water pressure between selected portions of the apparatus.
    Type: Grant
    Filed: September 4, 1987
    Date of Patent: June 7, 1988
    Inventor: Waymon Ragsdale
  • Patent number: 4303223
    Abstract: An improved valve facing for one member of relatively sliding gate valve members. More specifically, the improved valve facing has foamed polymeric core and an impervious and solid polymeric outer surface. This combination provides the necessary resilient and deformable characteristics for effecting a long-life seal between the sliding members of the gate valve. When the valve is a drain valve of a fire hydrant most unexpected results are obtained.
    Type: Grant
    Filed: August 3, 1978
    Date of Patent: December 1, 1981
    Assignee: Mueller Co.
    Inventors: Fred S. Whisenhunt, Lloyd J. Street
  • Patent number: 4073307
    Abstract: The specification discloses a fire hydrant and valve assembly therefor including a flexible, resilient compressible, fluid-impervious sealing flange or lip formed on and extending outwardly of the main valve sealing member for supplemental sealing of both the water passageway through the main valve seat ring and between the valve seat ring and inner surface of the hydrant conduit.Also disclosed is a method for assembling a valve assembly in a fire hydrant to prevent damage to the valve assembly by using the sealing flange or lip on the sealing member to locate and guide the valve assembly through the valve seat area of the conduit as well as to lubricate that area during insertion of the valve to ease assembly and facilitate later disassembly.
    Type: Grant
    Filed: July 30, 1976
    Date of Patent: February 14, 1978
    Assignee: Traverse City Iron Works
    Inventor: John H. Royce
  • Patent number: 3980097
    Abstract: A fire hydrant of the "dry" barrel type having an improved means of draining the barrel after the hydrant has been used and the main hydrant valve closed. The hydrant is provided with a drain passageway from the interior of the barrel above the main hydrant valve to the exterior of the valve. A first valve means, which is automatically opened or closed by actuation of the main hydrant valve element, is arranged to close the drain passageway when the main hydrant valve element is open and to open the drain passageway when the main hydrant valve element is closed. A pressure responsive one-way check valve in series with the valve means in said drain passage is automatically actuated to open position by pressure of water when there is water in the hydrant barrel and the valve means in series therewith in the drain passageway is open.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: September 14, 1976
    Assignee: Mueller Co.
    Inventor: Daniel A. Ellis
  • Patent number: 3980096
    Abstract: A fire hydrant having a hydrant valve seat assembly positioned between the flanged lower end of the hydrant barrel and the flanged end of the hydrant shoe. The hydrant valve seat assembly and the hydrant valve element may be retained with the hydrant shoe when the hydrant barrel is removed and replaced or the hydrant valve seat assembly and the hydrant valve element, when in the closed position, may be retained with the hydrant barrel when the hydrant shoe is removed and replaced from the barrel. The fire hydrant includes an improved valve seat ring and seat ring housing, both of which may be made of brass so as to provide easy removal of the valve seat. The hydrant is provided with an improved drain valve facing strip for cooperating with the drain passage when the hydrant valve is open.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: September 14, 1976
    Assignee: Mueller Co.
    Inventors: Daniel A. Ellis, Joseph L. Daghe
  • Patent number: 3943963
    Abstract: An improved frostproof hydrant having a readily removable valve seat-valve body assembly which may be easily replaced from the nozzle end of the hydrant as a single unit or as a portion thereof without any special alignment.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: March 16, 1976
    Inventor: Frank C. Papacek
  • Patent number: D504546
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: April 26, 2005
    Inventors: Ramon A. Vrielink, J. Lianne Cameron